Progress against the field
Between Marseille 2024 and Bordeaux 2025, Jean-François Michalczyk pulled 38:31 ahead of the field.
The clock says 42:59 faster, but the races themselves got 4:28 quicker for everyone.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown.
Every race
3 races · 3 events
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Bordeaux20 Nov 2025Individual Open · Men1:54:281389/1431Beat 3%
↑ 348 days after Marseille 2024 38:31 better than the field Why ↓Close ↑
42:59 faster on the clock, and the race was 4:28 faster for everyone, so 38:31 of it was this athlete.
The fieldCompare these two →4:28 faster This athlete42:59 faster -
Marseille7 Dec 2024Individual Open · Men2:37:271470/1477Beat 1%
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NiceDate unknownIndividual Open · Men1:44:07 PB1434/1562Beat 8%